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Entropy of a black hole

  1. Aug 6, 2004 #1
    Can someone tell me what the numerical value for the entropy of a black hole of five solar masses would be?
    Is it a huge number?
  2. jcsd
  3. Aug 6, 2004 #2


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    For a Schwarzchild black hole:

    [tex]S = \frac{2\pi kGM^2}{\hbar c}[/tex]

    whixh is approximately [itex]1.811 \times 10^{55}\\ JK^{-1}[/itex] For a 5 solar masses Schwarchild black hole
    Last edited: Aug 6, 2004
  4. Aug 6, 2004 #3
    Thanks jcsd.
    I want to see if I can come up with an equivalent calculation in theory development.
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